1021222012209 has 32 divisors (see below), whose sum is σ = 1607228538624. Its totient is φ = 564701829120.

The previous prime is 1021222012163. The next prime is 1021222012211. The reversal of 1021222012209 is 9022102221201.

1021222012209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021222012209 - 2¹³ = 1021222004017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021222012249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6203272 + ... + 6365769.

It is an arithmetic number, because the mean of its divisors is an integer number (50225891832).

Almost surely, 2^{1021222012209} is an apocalyptic number.

It is an amenable number.

1021222012209 is a deficient number, since it is larger than the sum of its proper divisors (586006526415).

1021222012209 is a wasteful number, since it uses less digits than its factorization.

1021222012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12569177.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 1021222012209 in words is "one trillion, twenty-one billion, two hundred twenty-two million, twelve thousand, two hundred nine".